Abstract: Objective: To investigate the clinical efficacy of evidence on Inspiratory Muscle Training in patients with Chronic Heart Failure, in order to improve patients' respiratory function and enhance their quality of life. Methods: Using evidence-based methods to screen evidence, formulated 25 review indicators. Convenience sampling method was used to select clinical nurses and Chronic Heart Failure patients, from September to December 2023, a baseline review involving 31 nurses and 62 patients was conducted to analyze obstacles and formulate strategies. From January to March 2024, practice changes were implemented, and compliance rates, patient training effects and life quality, nurses' knowledge pass rate were compared. Results: Eighteen indicators showed significant improvement in compliance (P<0.05). Furthermore, patients' respiratory muscle function, exercise endurance and dyspnea index improved (P<0.05), and the quality of life score decreased from 56.85±14.04 to 47.87±9.16 (P<0.05). The nurses' knowledge pass rate increased from 45.16% to 87.10% (P<0.05). Conclusion: Evidence-based Inspiratory Muscle Training enhances clinical compliance and improves respiratory muscle function, exercise endurance, and quality of life in patients with Chronic Heart Failure.

Key words: Chronic Heart Failure; Inspiratory Muscle Training; evidence-based practice; review indicator